Samsung tv, audio out not working

My problem is, I can't get the "Audio out" to work. I hooked up an amplifier and speakers (which I tested) but I don't get any sound. There is a very slight "pop" when I turn the amp's power switch on. If I turn the gain on the amp all the way up, I can hear a very slight sound , but not enough to understand the voices. I have everything hooked up the way the manual instructs. Thank you for any help you can supply.

Reply 1 : Samsung tv, audio out not working

richdell2,

What model is the TV?

--HDTech

Reply 2 : Samsung tv, audio out not working

There are 4 model numbers on the manual cover, I don't know how to determine which mine is. It is either TX-P2675WH, TX-PP3075WH, TX-P2775H OR TX-P3275H.
The Samsung web site has a feature, "find my model number" but I can't get it to work.
Thanks for getting back to me.